Inspection Procedure

1. Disconnect the R5 and R6 receiver connectors.
2. Measure the resistance of the receiver.

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   R6-5 (TX+) - R6-15 (TX-)	60 to 80 Ω
   R5-9 (TX+) - R5-10 (TX-)	60 to 80 Ω

NG : REPLACE RADIO RECEIVER ASSEMBLY 

Fig 1: Check Radio Receiver Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : GO TO NEXT STEP 

HINT:

For details of the connectors, refer to "TERMINALS OF ECU " .

1. Referring to the AVC-LAN wiring diagram below, check all AVC-LAN circuits.
   1. Disconnect all connectors in all AVC-LAN circuits.
   2. Check for an open or short in all AVC-LAN circuits.

      OK : There is no open or short circuit. 

      Fig 2: AVC-LAN Wiring Diagram

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK : PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN  PROBLEM SYMPTOMS TABLE